1321033312 has 48 divisors (see below), whose sum is σ = 2641448880. Its totient is φ = 650248192.

The previous prime is 1321033309. The next prime is 1321033333. The reversal of 1321033312 is 2133301231.

It is a super-2 number, since 2×1321033312² = 3490258022827378688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321033312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936864 + ... + 938272.

It is an arithmetic number, because the mean of its divisors is an integer number (55030185).

Almost surely, 2^1321033312 is an apocalyptic number.

It is an amenable number.

1321033312 is a deficient number, since it is larger than the sum of its proper divisors (1320415568).

1321033312 is a wasteful number, since it uses less digits than its factorization.

1321033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855 (or 1847 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1321033312 is about 36346.0219556419. The cubic root of 1321033312 is about 1097.2474740322.

Adding to 1321033312 its reverse (2133301231), we get a palindrome (3454334543).

The spelling of 1321033312 in words is "one billion, three hundred twenty-one million, thirty-three thousand, three hundred twelve".